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/*
*/
#ifndef COMMON_HPP_INCLUDED
#define COMMON_HPP_INCLUDED
#include <iostream>
#include <vector>
#include <cassert>
#include <sstream>
extern int g_debug_indent_level;
#define FMT(ss) (dynamic_cast< ::std::stringstream&>(::std::stringstream() << ss).str())
#define INDENT() do { g_debug_indent_level += 1; } while(0)
#define UNINDENT() do { g_debug_indent_level -= 1; } while(0)
#define DEBUG(ss) do{ ::std::cerr << ::RepeatLitStr{" ", g_debug_indent_level} << __FUNCTION__ << ": " << ss << ::std::endl; } while(0)
struct RepeatLitStr
{
const char *s;
int n;
friend ::std::ostream& operator<<(::std::ostream& os, const RepeatLitStr& r) {
for(int i = 0; i < r.n; i ++ )
os << r.s;
return os;
}
};
namespace rust {
template<typename T>
class option
{
bool m_set;
T m_data;
public:
option(T ent):
m_set(true),
m_data( ::std::move(ent) )
{}
option():
m_set(false)
{}
bool is_none() const { return !m_set; }
bool is_some() const { return m_set; }
const T& unwrap() const {
assert(is_some());
return m_data;
}
};
template<typename T>
class option<T&>
{
T* m_ptr;
public:
option(T& ent):
m_ptr(&ent)
{}
option():
m_ptr(nullptr)
{}
bool is_none() const { return m_ptr == nullptr; }
bool is_some() const { return m_ptr != nullptr; }
T& unwrap() const {
assert(is_some());
return *m_ptr;
}
};
template<typename T>
option<T> Some(T data) {
return option<T>( ::std::move(data) );
}
template<typename T>
option<T> None() {
return option<T>( );
}
};
namespace std {
template <typename T>
inline ::std::ostream& operator<<(::std::ostream& os, const ::std::vector<T>& v) {
if( v.size() > 0 )
{
bool is_first = true;
for( const auto& i : v )
{
if(!is_first)
os << ", ";
is_first = false;
os << i;
}
}
return os;
}
}
#endif
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